The aim of Structure and dynamics of the dominion of Santo Toribio de Liébana (13th-16th Centuries) is to explain the specific characteristics of a monastic dominion located in the northern area of the Iberian Peninsula. In the first part (13th Century and beginnings of 14th Century), it is considered that the material poverty that shows the monastery, observablein the modest volume of the rent and in the successive dispositions of property carried out by hierarchized local sectors, is the result of the dissimilar consolidation of the feudal structures in the area. Against areas in close proximity to the monastery, where the lord limits peasant freedom and extracts high and stable surpluses, there are other areas, considered as the periphery of the dominion, where the survival of the retrait lignager seriously prevented the consolidation of the dominical property. In these areas, the stabilization of the property rights of the lords only emerged from the conformation of coercive structures of powerat local level that annulled the effective exercise of the familiar rigths.In the second part of the book (14th-16th Centuries), there is an analysis of the specific strategies that allowed the increase of the volume of the feudal rent in the long term. In front of the theses that defend an early parcelling of the reserve and a commutation of the corvea, here it is observed, on the contrary, the increase of his extension in the final centuries of the Middle Ages. At the same time, there is a process of land parcelling, impelled by the lord in order to increase of number of homes forced to pay rent. Both aspects, lord appropriation of the space andincrease of the rate of the rent, were the result of the effective exercise of political coercion.